Tom Lendacky 20c28c04a6 x86/cpu/AMD: Make LFENCE a serializing instruction ... commit e4d0e84e490790798691aaa0f2e598637f1867ec upstream. To aid in speculation control, make LFENCE a serializing instruction since it has less overhead than MFENCE. This is done by setting bit 1 of MSR 0xc0011029 (DE_CFG). Some families that support LFENCE do not have this MSR. For these families, the LFENCE instruction is already serializing. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: Paul Turner <pjt@google.com> Link: https://lkml.kernel.org/r/20180108220921.12580.71694.stgit@tlendack-t1.amdoffice.net Signed-off-by: Razvan Ghitulete <rga@amazon.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-01-23 19:50:11 +01:00
..
crypto	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00
fpu	Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-11-03 21:05:40 -08:00
numachip	x86/numachip: Introduce Numachip2 timer mechanisms	2015-09-22 22:25:33 +02:00
trace	x86/fpu/mpx: Rework MPX 'xstate' types	2015-09-14 12:22:00 +02:00
uv	x86/platform/uv: Insert per_cpu accessor function on uv_hub_nmi	2015-09-13 09:27:53 +02:00
xen	x86/xen: allow userspace access during hypercalls	2017-07-27 15:06:06 -07:00
a.out-core.h
acenv.h
acpi.h	acpi, x86: Implement arch_apei_get_mem_attributes()	2015-08-08 10:37:39 +02:00
agp.h
alternative-asm.h	x86/alternatives: Fix alt_max_short macro to really be a max()	2017-10-18 09:20:43 +02:00
alternative.h	x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm	2018-01-17 09:35:33 +01:00
amd_nb.h	x86/amd_nb, EDAC: Rename amd_get_node_id()	2015-10-21 11:10:55 +02:00
apb_timer.h
apic.h	x86/apic: Fix suspicious RCU usage in smp_trace_call_function_interrupt()	2016-04-12 09:08:38 -07:00
apic_flat_64.h
apicdef.h
apm.h
arch_hweight.h	x86/hweight: Force inlining of __arch_hweight{32,64}()	2015-08-05 09:38:09 +02:00
archrandom.h
asm-offsets.h
asm.h	Revert "x86/mm: Expand the exception table logic to allow new handling options"	2016-10-31 19:56:26 -06:00
atomic.h	atomic, arch: Audit atomic_{read,set}()	2015-09-23 09:54:28 +02:00
atomic64_32.h	x86: Provide atomic_{or,xor,and}	2015-07-27 14:06:23 +02:00
atomic64_64.h	atomic, arch: Audit atomic_{read,set}()	2015-09-23 09:54:28 +02:00
barrier.h	Merge branch 'x86/asm' into locking/core	2015-08-03 11:04:00 +02:00
bios_ebda.h
bitops.h
boot.h	x86/boot: Double BOOT_HEAP_SIZE to 64KB	2016-01-31 11:28:54 -08:00
bootparam_utils.h
bug.h
bugs.h
cache.h
cacheflush.h	nd_blk: change aperture mapping from WC to WB	2015-08-27 19:38:28 -04:00
calgary.h
ce4100.h
checksum.h
checksum_32.h
checksum_64.h
clocksource.h
cmdline.h	x86/boot: Add early cmdline parsing for options with arguments	2018-01-05 15:44:23 +01:00
cmpxchg.h	arch: Remove __ARCH_HAVE_CMPXCHG	2015-05-13 10:55:42 +02:00
cmpxchg_32.h
cmpxchg_64.h
compat.h	x86/asm/entry/64: Save user RSP in pt_regs->sp on SYSCALL64 fastpath	2015-03-10 13:56:10 +01:00
cpu.h	x86: Use common outgoing-CPU-notification code	2015-03-11 13:22:35 -07:00
cpu_device_id.h
cpufeature.h	x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]	2018-01-17 09:35:32 +01:00
cpumask.h
crash.h
current.h
debugreg.h
delay.h	x86/asm/delay: Introduce an MWAITX-based delay with a configurable timer	2015-08-22 14:52:16 +02:00
desc.h	kaiser: cleanups while trying for gold link	2018-01-05 15:44:24 +01:00
desc_defs.h
device.h
disabled-features.h	x86/mm: Disable PCID on 32-bit kernels	2018-01-02 20:33:23 +01:00
div64.h
dma-mapping.h	dma-mapping: consolidate dma_set_mask	2015-09-10 13:29:01 -07:00
dma.h
dmi.h
dwarf2.h	x86/asm: Remove the xyz_cfi macros from dwarf2.h	2015-10-14 16:56:28 +02:00
e820.h	mm: move memtest under mm	2015-04-14 16:49:06 -07:00
edac.h	EDAC: Cleanup atomic_scrub mess	2015-05-28 15:31:53 +02:00
efi.h	Revert "x86/efi: Hoist page table switching code into efi_call_virt()"	2017-12-16 10:33:57 +01:00
elf.h	x86/fsgsbase/64: Report FSBASE and GSBASE correctly in core dumps	2017-09-27 11:00:12 +02:00
emergency-restart.h
entry_arch.h	Merge branch 'x86/ras' into x86/core, to fix conflicts	2015-06-07 15:35:27 +02:00
espfix.h	x86/espfix: Add 'cpu' parameter to init_espfix_ap()	2015-07-06 15:00:33 +02:00
exec.h
fb.h
fixmap.h
floppy.h
frame.h	x86/debug: Remove perpetually broken, unmaintainable dwarf annotations	2015-06-02 07:57:48 +02:00
ftrace.h	ftrace: Format MCOUNT_ADDR address as type unsigned long	2015-07-20 22:30:53 -04:00
futex.h
gart.h
genapic.h
geode.h
gpio.h
hardirq.h	x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code	2018-01-02 20:33:23 +01:00
highmem.h	kmap_atomic_to_page() has no users, remove it	2015-11-09 15:11:24 -08:00
hpet.h	timers/x86/hpet: Type adjustments	2015-10-21 11:17:32 +02:00
hugetlb.h	x86/mm/xen: Suppress hugetlbfs in PV guests	2016-05-04 14:48:42 -07:00
hw_breakpoint.h
hw_irq.h	KAISER: Kernel Address Isolation	2018-01-05 15:44:23 +01:00
hypertransport.h
hypervisor.h	hypervisor/x86/xen: Unset X86_BUG_SYSRET_SS_ATTRS on Xen PV guests	2015-05-05 18:27:43 +01:00
i8259.h	x86/irq: Probe for PIC presence before allocating descs for legacy IRQs	2015-11-07 10:37:37 +01:00
ia32.h	x86/headers: Remove <asm/sigcontext.h> references on the kernel side	2015-09-08 10:06:05 +02:00
ia32_unistd.h
idle.h
imr.h	x86/intel/quark: Add Isolated Memory Regions for Quark X1000	2015-02-18 23:22:47 +01:00
inat.h
inat_types.h
init.h
insn.h	x86/asm/decoder: Fix and enforce max instruction size in the insn decoder	2015-02-19 00:01:24 +01:00
inst.h
intel-mid.h	x86, intel-mid: remove Intel MID specific serial support	2015-03-07 03:25:18 +01:00
intel_mid_vrtc.h
intel_pmc_ipc.h	intel_pmc_ipc: Update kerneldoc formatting	2015-07-09 11:23:15 -07:00
intel_scu_ipc.h
io.h	x86/io: Add "memory" clobber to insb/insw/insl/outsb/outsw/outsl	2017-09-02 07:06:52 +02:00
io_apic.h	x86: Cleanup irq_domain ops	2015-04-24 15:36:55 +02:00
iomap.h
iommu.h
iommu_table.h	x86/iommu: Fix header comments regarding standard and _FINISH macros	2015-04-09 10:56:31 +02:00
iosf_mbi.h	x86/platform/iosf_mbi: Source cleanup	2015-07-16 17:48:48 +02:00
ipi.h
irq.h	x86/irq: Call irq_force_move_complete with irq descriptor	2016-03-03 15:07:31 -08:00
irq_regs.h
irq_remapping.h	irq_remapping: move structs outside #ifdef	2015-10-01 15:06:42 +02:00
irq_vectors.h	x86/vm86: Move the vm86 IRQ definitions to vm86.h	2015-07-31 13:31:10 +02:00
irq_work.h
irqdomain.h	x86/irq: Move irqdomain specific code into asm/irqdomain.h	2015-04-24 15:36:55 +02:00
irqflags.h	x86/asm/entry: Drop now unused ENABLE_INTERRUPTS_SYSEXIT32	2015-04-03 10:34:19 +02:00
ist.h
jump_label.h	jump_label/x86: Work around asm build bug on older/backported GCCs	2015-08-13 08:44:43 +02:00
kaiser.h	x86/pti/efi: broken conversion from efi to kernel page table	2018-01-17 09:35:29 +01:00
kasan.h	x86/kasan: Define KASAN_SHADOW_OFFSET per architecture	2015-08-22 14:54:55 +02:00
kbdleds.h
Kbuild	mm: clean up per architecture MM hook header files	2015-07-17 16:39:53 -07:00
kdebug.h	x86/kexec: Remove obsolete 'in_crash_kexec' flag	2015-10-12 09:43:11 +02:00
kexec-bzimage64.h
kexec.h
kgdb.h
kmap_types.h
kmemcheck.h
kprobes.h
kvm_emulate.h	KVM: x86: fix singlestepping over syscall	2017-11-21 09:21:17 +01:00
kvm_guest.h
kvm_host.h	KVM: x86: reduce default value of halt_poll_ns parameter	2016-04-20 15:42:07 +09:00
kvm_para.h	x86: Use bool function return values of true/false not 1/0	2015-03-31 18:05:09 +02:00
lguest.h	lguest: suppress interrupts for single insn, not range.	2015-03-24 11:52:08 +10:30
lguest_hcall.h
linkage.h
livepatch.h	livepatch: x86: make kASLR logic more accurate	2015-04-29 16:51:33 +02:00
local.h
local64.h
mach_timer.h
mach_traps.h
math_emu.h	x86/vm86: Clean up vm86.h includes	2015-07-31 13:31:10 +02:00
mc146818rtc.h
mce.h	x86/mce: Add a Scalable MCA vendor flags bit	2015-11-01 11:26:13 +01:00
microcode.h	x86/microcode: Untangle from BLK_DEV_INITRD	2016-04-12 09:08:32 -07:00
microcode_amd.h	x86/microcode: Merge the early microcode loader	2015-10-21 11:22:12 +02:00
microcode_intel.h	x86/microcode: Merge the early microcode loader	2015-10-21 11:22:12 +02:00
misc.h
mmconfig.h
mmu.h	x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code	2018-01-02 20:33:23 +01:00
mmu_context.h	x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code	2018-01-02 20:33:23 +01:00
mmx.h
mmzone.h
mmzone_32.h
mmzone_64.h
module.h
mpspec.h
mpspec_def.h
mpx.h	x86/mpx: Support 32-bit binaries on 64-bit kernels	2015-06-09 12:24:34 +02:00
mshyperv.h	mshyperv: fix recognition of Hyper-V guest crash MSR's	2015-08-04 22:30:44 -07:00
msi.h	x86/MSI: Use hierarchical irqdomains to manage MSI interrupts	2015-04-24 15:36:49 +02:00
msidef.h
msr-index.h	x86/cpu/AMD: Make LFENCE a serializing instruction	2018-01-23 19:50:11 +01:00
msr.h	x86/asm/msr: Make wrmsrl() a function	2015-08-23 13:25:38 +02:00
mtrr.h	x86/mtrr: Fix Xorg crashes in Qemu sessions	2016-08-16 09:30:49 +02:00
mutex.h
mutex_32.h
mutex_64.h
mwait.h	x86/asm: Add MONITORX/MWAITX instruction support	2015-08-22 14:52:16 +02:00
nmi.h
nops.h
numa.h
numa_32.h
olpc.h
olpc_ofw.h
page.h
page_32.h
page_32_types.h
page_64.h
page_64_types.h	x86/asm: Move PUD_PAGE macros to page_types.h	2015-09-22 21:27:32 +02:00
page_types.h	x86/mm: Fix regression with huge pages on PAE	2015-12-04 09:14:27 +01:00
paravirt.h	x86/paravirt: Prevent rtc_cmos platform device init on PV guests	2015-12-19 21:35:13 +01:00
paravirt_types.h	x86/paravirt: Prevent rtc_cmos platform device init on PV guests	2015-12-19 21:35:13 +01:00
parport.h
pat.h	x86/mm/pat: Don't report PAT on CPUs that don't support it	2017-07-15 11:57:50 +02:00
pci-direct.h
pci-functions.h
pci.h	Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block	2015-06-25 15:22:36 -07:00
pci_64.h
pci_x86.h	Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"	2016-04-20 15:42:16 +09:00
percpu.h
perf_event.h	perf/x86/intel: Add definition for PT PMI bit	2016-04-12 09:08:33 -07:00
perf_event_p4.h
pgalloc.h	x86: expose number of page table levels on Kconfig level	2015-04-14 16:49:02 -07:00
pgtable-2level.h
pgtable-2level_types.h	x86: expose number of page table levels on Kconfig level	2015-04-14 16:49:02 -07:00
pgtable-3level.h
pgtable-3level_types.h	x86: expose number of page table levels on Kconfig level	2015-04-14 16:49:02 -07:00
pgtable.h	KPTI: Rename to PAGE_TABLE_ISOLATION	2018-01-05 15:44:26 +01:00
pgtable_32.h
pgtable_32_types.h
pgtable_64.h	KPTI: Rename to PAGE_TABLE_ISOLATION	2018-01-05 15:44:26 +01:00
pgtable_64_types.h	x86: expose number of page table levels on Kconfig level	2015-04-14 16:49:02 -07:00
pgtable_types.h	KPTI: Rename to PAGE_TABLE_ISOLATION	2018-01-05 15:44:26 +01:00
platform_sst_audio.h
pm-trace.h	PM / sleep: add pm-trace support for suspending phase	2015-03-18 15:54:27 +01:00
pmc_atom.h	x86/platform/intel/pmc_atom: Add Cherrytrail PMC interface	2015-07-06 18:39:38 +02:00
pmem.h	x86, pmem: Fix cache flushing for iovec write < 8 bytes	2017-05-20 14:27:00 +02:00
posix_types.h
preempt.h	sched/core, sched/x86: Kill thread_info::saved_preempt_count	2015-10-06 17:08:18 +02:00
probe_roms.h
processor-cyrix.h
processor-flags.h
processor.h	x86/cpufeatures: Make CPU bugs sticky	2018-01-17 09:35:32 +01:00
prom.h
proto.h	x86/asm/entry: Untangle 'system_call' into two entry points: entry_SYSCALL_64 and entry_INT80_32	2015-06-08 09:14:21 +02:00
ptrace.h	x86/entry: Remove do_notify_resume(), syscall_trace_leave(), and their TIF masks	2015-08-05 10:54:35 +02:00
pvclock-abi.h	Revert "KVM: x86: zero kvmclock_offset when vcpu0 initializes kvmclock system MSR"	2015-09-28 13:06:37 +02:00
pvclock.h	x86/vsdo: Fix build on PARAVIRT_CLOCK=y, KVM_GUEST=n	2018-01-17 09:35:25 +01:00
qrwlock.h	locking/qrwlock: Implement queue_write_unlock() using smp_store_release()	2015-08-12 11:59:05 +02:00
qspinlock.h	locking/qspinlock/x86: Only emit the test-and-set fallback when building guest support	2015-09-11 07:50:12 +02:00
qspinlock_paravirt.h	locking/pvqspinlock, x86: Implement the paravirt qspinlock call patching	2015-05-08 12:37:09 +02:00
realmode.h
reboot.h
reboot_fixups.h
required-features.h
rio.h
rmwcc.h
rtc.h
rwsem.h
seccomp.h	x86: switch to using asm-generic for seccomp.h	2015-04-17 09:04:10 -04:00
sections.h
segment.h	x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers	2015-06-02 09:39:40 +02:00
serial.h	serial: 8250: remove Kconfig indirection	2015-05-06 22:27:00 +02:00
setup.h	x86: kaslr: fix build due to missing ALIGN definition	2015-04-29 21:54:54 +02:00
setup_arch.h
shmparam.h
sigcontext.h	x86/headers: Remove <asm/sigcontext.h> references on the kernel side	2015-09-08 10:06:05 +02:00
sigframe.h	x86/headers: Remove <asm/sigcontext.h> references on the kernel side	2015-09-08 10:06:05 +02:00
sighandling.h	x86/signal: Remove pax argument from restore_sigcontext	2015-04-06 09:06:39 +02:00
signal.h	x86/headers: Remove <asm/sigcontext.h> references on the kernel side	2015-09-08 10:06:05 +02:00
simd.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00
smap.h	x86/smap: Use ALTERNATIVE macro	2015-02-23 13:44:14 +01:00
smp.h	x86: Remove cpu_sibling_mask() and cpu_core_mask()	2015-05-27 15:22:17 +02:00
sparsemem.h
special_insns.h	x86/mm: Add kerneldoc comments for pcommit_sfence()	2015-05-11 10:38:44 +02:00
spinlock.h	locking/pvqspinlock: Rename QUEUED_SPINLOCK to QUEUED_SPINLOCKS	2015-05-11 09:52:09 +02:00
spinlock_types.h	locking/pvqspinlock: Rename QUEUED_SPINLOCK to QUEUED_SPINLOCKS	2015-05-11 09:52:09 +02:00
sta2x11.h
stackprotector.h	x86/asm/tsc: Rename native_read_tsc() to rdtsc()	2015-07-06 15:23:28 +02:00
stacktrace.h
string.h
string_32.h
string_64.h	x86, kasan: Fix build failure on KASAN=y && KMEMCHECK=y kernels	2015-10-19 10:07:23 +02:00
suspend.h
suspend_32.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00
suspend_64.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00
svm.h
swiotlb.h
switch_to.h	x86/sched/64: Don't save flags on context switch (reinstated)	2015-09-25 09:29:17 +02:00
sync_bitops.h
sys_ia32.h
syscall.h	x86/syscalls: Give sys_call_ptr_t a useful type	2015-10-09 09:41:08 +02:00
syscalls.h	x86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt()	2017-12-09 18:42:40 +01:00
sysfb.h
tce.h
thread_info.h	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-11-03 18:59:10 -08:00
time.h
timer.h
timex.h
tlb.h
tlbflush.h	KPTI: Rename to PAGE_TABLE_ISOLATION	2018-01-05 15:44:26 +01:00
topology.h	Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-06-22 17:59:09 -07:00
trace_clock.h
traps.h	x86/entry: Remove exception_enter() from most trap handlers	2015-07-07 10:59:09 +02:00
tsc.h	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-01 08:40:25 -07:00
uaccess.h	x86/uaccess, sched/preempt: Verify access_ok() context	2017-11-15 17:13:11 +01:00
uaccess_32.h	Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-06-22 17:59:09 -07:00
uaccess_64.h	x86: clean up/fix 'copy_in_user()' tail zeroing	2015-04-08 14:28:45 -07:00
unaligned.h
unistd.h
uprobes.h
user.h	x86/fpu: Rename xsave.header::xstate_bv to 'xfeatures'	2015-05-19 15:47:35 +02:00
user32.h
user_32.h
user_64.h
vdso.h	x86/vdso: Get pvclock data from the vvar VMA instead of the fixmap	2018-01-05 15:44:27 +01:00
vga.h
vgtod.h
virtext.h
vm86.h	x86/vm86: Rename vm86->v86flags and v86mask	2015-07-31 13:31:11 +02:00
vmx.h	KVM: VMX: Enable and initialize VMX TSC scaling	2015-11-10 12:06:19 +01:00
vsyscall.h	Map the vsyscall page with _PAGE_USER	2018-01-10 09:27:14 +01:00
vvar.h
word-at-a-time.h
x2apic.h
x86_init.h	x86/mm: Fix regression with huge pages on PAE	2015-12-04 09:14:27 +01:00
xor.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00
xor_32.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00
xor_64.h
xor_avx.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00